M-type Vega-like stars
Astrophysics
2009-11-07 v1
Abstract
We carried out a search for M-type Vega-like stars by correlating the IRAS Faint Source Catalog with Hipparcos selected M-type stars. Three stars with apparent IRAS 25mu excess emission are shown instead to be non-IR-excess stars from ground-based 11.7 and 17.9mu photometry. Two stars previously suggested to have Vega-like mid-IR excess are also shown to be non-excess stars. These results imply that other suggested mid-IR excess stars in the literature may also be false excess stars. Detection threshold bias is apparently responsible for these bogus IR excesses. Sixty micron excess emission from a previously known M-type Vega-like star (GJ 803) is identified again.
Keywords
Cite
@article{arxiv.astro-ph/0204255,
title = {M-type Vega-like stars},
author = {Inseok Song and A. Weinberger and E. Becklin and B. Zuckerman and C. Chen},
journal= {arXiv preprint arXiv:astro-ph/0204255},
year = {2009}
}
Comments
3 figures, 1 table. Accepted in AJ